Ch 5- How Ecosystems work- pg. 142 Brittney compton
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| Photosynthesis | Energy from the sun to the ecosystem transfered to the plant for food. | ||||
| producer | An organisim that makes its own food. | ||||
| Consumers | Organisims that get their energy by eating other organisims. | ||||
| Decomposers | organisims that break down dead rotting organisims. | ||||
| cellular respiratoin | The process of breaking down food to yeld energy which occurs in inside the cells of most organisims. | ||||
| Food chain | Is a sequence in which energy is transferd from one organisim to the next. | ||||
| Food web | Shows many feeding relationships that are posible in an ecosystem. | ||||
| Trophic level | Each step through which energy is transfered in a food chain. | ||||
| Carbon cycle | Is a process by which carbon is cycled between the atmosphere, land, water, and organisims. | ||||
| Nitrogin-fixing Bacteria | the only bacteria that can fix atmoshpheric nitrognen compond. | ||||
| Nitrogin Cycle | a process in which nitrogen is cycled between the atmosphere,bacteria, and other organisims. | ||||
| Phosphorus Cycle | is the movement of phrosphorus from the enviroment to the organisims and then back to enviroment. | ||||
| Ecological succession | is a gradual process of change and repacement of some or all of the species in a community. | ||||
| primary succession | is the type of succession that occurs on a surface where no ecosystem existed before. | ||||
| Seccondary succession | the more common type of succession,occurs on a surface where a ecosystem has previously exsisted. | ||||
| Pioneer species | the first organisims to colonize any newly avaliable area and begin the process of ecological succession. | ||||
| Climax communitity | is a final and stable community |
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Created by:
samo6144
on 2011-10-10